WO2019233167A1 - Chain cover - Google Patents

Chain cover Download PDF

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Publication number
WO2019233167A1
WO2019233167A1 PCT/CN2019/079949 CN2019079949W WO2019233167A1 WO 2019233167 A1 WO2019233167 A1 WO 2019233167A1 CN 2019079949 W CN2019079949 W CN 2019079949W WO 2019233167 A1 WO2019233167 A1 WO 2019233167A1
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WO
WIPO (PCT)
Prior art keywords
cover
chain
flywheel
tube
pipe
Prior art date
Application number
PCT/CN2019/079949
Other languages
French (fr)
Chinese (zh)
Inventor
黄跃波
Original Assignee
Huang Yuebo
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huang Yuebo filed Critical Huang Yuebo
Publication of WO2019233167A1 publication Critical patent/WO2019233167A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
    • B62J13/00—Guards for chain, chain drive or equivalent drive, e.g. belt drive
    • B62J13/04—Guards for chain, chain drive or equivalent drive, e.g. belt drive completely enclosing the chain drive or the like

Definitions

  • the invention relates to a protective device for a bicycle chain transmission system.
  • the rigid, thin-walled cover like the resonance box of a musical instrument, amplifies the noise emitted by the chain hitting the cover, reducing the riding experience.
  • the rigid structure of the cover is relatively heavy.
  • One of the characteristics of the bicycle industry is the endless pursuit of lightweight.
  • Patent NL1000573C2 shows a chain cover suitable for an outer shift bicycle.
  • the upper cover portion (3) is a rigid member assembled from the rear portion (14) of the crank cover and the front portion (15) of the flywheel cover.
  • the upper cover part (3) also has problems of complicated structure and high manufacturing cost.
  • the lower cover part (4) is composed of a bellows (9), a rigid chain pipe (8), and a bellows (10) connected in sequence.
  • the lower cover part (4) can expand and contract to adapt to the change of the length of the lower chain section (the chain section between the tension wheel and the chainring), which is the key for the chain cover to be suitable for variable speed bicycles.
  • the hard chain pipe (8) is made of abrasion-resistant materials such as nylon or polyethylene, and its inner wall slides and rubs against the chain.
  • the invention has the following problems: 1.
  • the lower cover part (4) is composed of multiple parts, the structure is complicated, and the cost is relatively high. 2.
  • the lower cover part (4) must withstand the pulling force of the rear dial, and the more connection points, the lower the reliability. 3.
  • the hard chain tube (8) is relatively heavy. 4. The friction between the hard chain tube (8) and the chain reduces the transmission efficiency, which is a serious defect for bicycles.
  • a main object of the present invention is to provide a chain cover for protecting the chainring and the upper chain segment.
  • a main object of the present invention is to make the chain cover difficult to be damaged when it collides with the outside world.
  • a main object of the present invention is to enable the chain cover to be used in a common frame.
  • One of the main objects of the present invention is to make the chain cover relatively quiet when riding.
  • a main object of the invention is to make the chain cover less costly.
  • a main object of the present invention is to make the chain cover lighter.
  • the chain cover includes: a crank cover, a flywheel cover, and a winding tube; the crank cover is box-shaped; the crank cover is provided with a crank cover chain entrance; the crank cover is fixedly connected to the middle of the frame; the flywheel cover It is box-shaped; the flywheel cover is provided with a flywheel cover chain outlet; the flywheel cover is integrally manufactured or fixedly connected to the rear of the frame; the winding tube is flexible; The rear of the tube is positioned at the flywheel cover chain outlet.
  • the invention provides a basic protection scheme for the chain transmission system, that is, a scheme for protecting only the chainring and the upper chain segment (the chain segment between the chainring and the flywheel).
  • the present invention has the following advantages: 1. Because the winding pipe is flexible, the present invention can universally use frames of different specifications (different orientations and distances between the crankset and the flywheel): 1.1.
  • the winding pipe is inelastic. The initial length of the winding tube can be applied to the frame with the largest size. For smaller frames, the excess portion of the winding tube can be cut off; or the excess portion of the winding tube can be rolled together. 1.2.
  • the winding tube is elastic.
  • the winding tube can be applied to small-sized frames after being retracted, and can be applied to large-sized frames after being stretched. 2. Due to the wide universality of the chain cover, the costs of manufacturers, sellers, and consumers can be reduced; in addition, the winding pipe has a simple structure and its manufacturing cost is also low. 3. Since the winding tube is made of a flexible material (such as fabric), the chain cover is lighter than a chain cover made of a rigid material. 4. Since the winding tube is flexible and the winding tube makes the crank cover and the flywheel cover no longer rigidly integrated into one body, the possibility of damage to the chain cover caused by crashing or bumping is much lower than the rigid chain cover. 5. The flexible winding tube produces almost no noise; coupled with the flexible connection of the chainring cover and the flywheel cover by the winding tube, the noise generated by the chain cover due to its own vibration is reduced, and the resonance box effect is avoided. Quiet when riding.
  • a secondary object of the present invention is to protect the lower link.
  • a secondary object of the present invention is to reduce the transmission loss of the lower link.
  • a secondary object of the present invention is to make the cost of the chain cover lower.
  • a secondary object of the present invention is to make the chain cover lighter.
  • a secondary object of the present invention is to improve the reliability of the chain cover.
  • the chain cover of the present invention also includes a lower chain tube; the lower chain tube is made of an elastic material; the chain plate cover is provided with a chain plate cover chain outlet; the front part of the chain pipe is positioned and connected to the chain plate cover chain outlet; The rear part of the tube is positioned and connected to the dial.
  • the following chain pipe of the present invention replaces the lower cover part of the combination of the bellows and the hard chain pipe in the patent NL1000573C2.
  • the lower tube is made of elastic material (such as elastic fabric, rubber film, etc.), and its weight is light.
  • the present invention overcomes the technical prejudice of "hard” resisting chain friction with abrasion-resistant materials:
  • the elastic lower chain tube can be deformed with the movement of the chain, so that the friction between the two is extremely small, and the transmission loss of the chain is reduced It also reduces the wear of the down-link tube; since the cost of the down-link tube is extremely low, the present invention regards the down-link tube as a consumable and can be replaced after wear.
  • leg part is tubular, and the lower mouth of the leg part faces the chain moving direction; the rear part of the lower chain tube is positioned and connected to the lower mouth of the leg part.
  • This solution protects the guide wheel, the tension wheel, and the chain segment between them by using a tubular leg part.
  • the chain cover of the present invention further comprises a sleeve; the sleeve is fixedly sleeved on the leg part, and the lower mouth of the sleeve is directed to the moving direction of the chain; the rear part of the lower chain pipe is positioned and connected to the lower mouth of the sleeve.
  • This solution uses sleeves to protect the legs.
  • a preferred solution is that the rear part of the lower chain pipe is pivoted on the tension wheel shaft and is pivotally connected to the leg shifter.
  • a secondary object of the present invention is to enhance the tightness of the chain cover.
  • a secondary object of the present invention is to protect a transmission mechanism.
  • the flywheel cover is a half cover; the chain cover of the present invention also includes a dust cover; the dust cover is flexible; the dust cover is fixedly connected to the flywheel cover to form a basically closed space, so as to cover the legs and the flywheel.
  • This solution protects the transmission system in all directions and effectively improves the reliability of the transmission system.
  • a secondary object of the present invention is to provide a full chain cover suitable for a single speed bicycle.
  • the flywheel cover is a full cover; the flywheel cover is provided with a flywheel cover chain inlet; the rear part of the lower chain tube is positioned and connected to the flywheel cover chain inlet.
  • the chain cover puts the chain transmission mechanism of the single-speed bicycle in it, which isolates the bad influences from the outside world, improves reliability, reduces maintenance workload, and extends service life. Because the lower and upper tubes are both flexible, the chain cover of this solution also has the advantages of wide versatility, low noise, low cost, light weight, and easy installation.
  • a secondary object of the present invention is to make the chain cover suitable for a rear suspension frame.
  • the flywheel cover is fixedly connected to the frame rod connected to the rear wheel axle.
  • a preferred scheme for connecting the flywheel cover to the frame is that the cover wall of the flywheel cover is clamped between the fork end piece and the hub end.
  • This solution has the advantage of wide versatility, regardless of whether the hard or soft tail frame can be used without modification.
  • a secondary object of the present invention is to enable the chain cover to be used in a common frame.
  • the winding tube is elastically stretchable.
  • Another secondary object of the present invention is to be able to conveniently open the winding tube for servicing the chain.
  • the winding pipe has a longitudinally through hole, which can be opened and closed.
  • FIG. 1 is an overall schematic view of a chain cover of Embodiment 1.
  • FIG. 1 is an overall schematic view of a chain cover of Embodiment 1.
  • Fig. 2 is an exploded view of the chain cover of the first embodiment.
  • FIG. 3 is a schematic diagram of the installation of the flywheel cover in Embodiment 1.
  • FIG. 3 is a schematic diagram of the installation of the flywheel cover in Embodiment 1.
  • FIG. 4 is a schematic diagram of a connection between a lower chain tube and a shift leg in Embodiment 1.
  • FIG. 4 is a schematic diagram of a connection between a lower chain tube and a shift leg in Embodiment 1.
  • FIG. 5 is a schematic diagram of a chain cover suitable for a single-speed bicycle in Embodiment 2.
  • FIG. 5 is a schematic diagram of a chain cover suitable for a single-speed bicycle in Embodiment 2.
  • FIG. 6 is a schematic diagram of a connection between a crank cover and a frame in Embodiment 2.
  • FIG. 6 is a schematic diagram of a connection between a crank cover and a frame in Embodiment 2.
  • FIG. 7 is a schematic diagram of a crankset cover and the connection between the crankset cover and a vehicle frame in Embodiment 2.
  • FIG. 7 is a schematic diagram of a crankset cover and the connection between the crankset cover and a vehicle frame in Embodiment 2.
  • FIG. 8 is a schematic diagram of a connection between a crankset cover and a frame in Embodiment 2.
  • FIG. 9 is a schematic diagram of a connection between a tubular shifting leg and a lower chain pipe in Embodiment 3.
  • FIG. 9 is a schematic diagram of a connection between a tubular shifting leg and a lower chain pipe in Embodiment 3.
  • FIG. 10 is a schematic diagram of a connection between a sleeve, a leg and a lower chain pipe according to Embodiment 3.
  • FIG. 10 is a schematic diagram of a connection between a sleeve, a leg and a lower chain pipe according to Embodiment 3.
  • FIG. 11 is a schematic diagram of a gap between a lower link and a front link of a lower pipe in Embodiment 3.
  • FIG. 11 is a schematic diagram of a gap between a lower link and a front link of a lower pipe in Embodiment 3.
  • FIG. 12 is a schematic diagram of a fixed connection between a shifting leg and a lower chain pipe in Embodiment 3.
  • FIG. 12 is a schematic diagram of a fixed connection between a shifting leg and a lower chain pipe in Embodiment 3.
  • FIG. 13 is a schematic diagram of a pivotal connection between a tubular shifting leg and a lower chain pipe in Embodiment 3.
  • FIG. 13 is a schematic diagram of a pivotal connection between a tubular shifting leg and a lower chain pipe in Embodiment 3.
  • FIG. 14 is a schematic diagram of a flywheel cover in Embodiment 4.
  • FIG. 14 is a schematic diagram of a flywheel cover in Embodiment 4.
  • FIG. 15 is a schematic diagram of a flywheel cover in Embodiment 4.
  • FIG. 15 is a schematic diagram of a flywheel cover in Embodiment 4.
  • FIG. 16 is a schematic diagram of a connection scheme between a flywheel cover and a frame in Embodiment 4.
  • FIG. 16 is a schematic diagram of a connection scheme between a flywheel cover and a frame in Embodiment 4.
  • FIG. 17 is a schematic diagram of a connection scheme between a flywheel cover and a suspension frame in Embodiment 4.
  • FIG. 17 is a schematic diagram of a connection scheme between a flywheel cover and a suspension frame in Embodiment 4.
  • FIG. 18 is a schematic diagram of a down-chain pipe of Embodiment 5.
  • FIG. 18 is a schematic diagram of a down-chain pipe of Embodiment 5.
  • FIG. 19 is a schematic view of a winding pipe of Embodiment 5.
  • FIG. 20 is a schematic diagram of a connection between a winding pipe and a flywheel cover in Embodiment 5.
  • FIG. 20 is a schematic diagram of a connection between a winding pipe and a flywheel cover in Embodiment 5.
  • FIG. 21 is a schematic diagram of a connection between a lower chain pipe and a tubular shifting leg in Embodiment 5.
  • FIG. 21 is a schematic diagram of a connection between a lower chain pipe and a tubular shifting leg in Embodiment 5.
  • FIG. 22 is a schematic diagram of a dustproof cover of Embodiment 6.
  • FIG. 22 is a schematic diagram of a dustproof cover of Embodiment 6.
  • FIG. 23 is a schematic diagram of a dustproof case in Embodiment 6.
  • FIG. 23 is a schematic diagram of a dustproof case in Embodiment 6.
  • FIG. 24 is a schematic diagram of a dustproof cover in Embodiment 6.
  • FIG. 24 is a schematic diagram of a dustproof cover in Embodiment 6.
  • the crank cover 01 is a box shape covering the outer part of the crank.
  • the left wall of the crank cover 01 is preferably a truncated cone shape.
  • a crankshaft hole is provided on the right side of the crankshaft cover 01 and a cover plate 08 which closes the crankshaft hole.
  • a through hole is formed in the center of the cover plate 08 to accommodate the passage of the crank.
  • the outer periphery of the cover plate 08 has a flange, and the flange is inserted into the crank hole and is fixed with friction.
  • the crank cover 01 is provided with a crank cover chain inlet 20 and a crank cover chain outlet 21.
  • the chain inlet 20 and the chain outlet 21 protrude from the surface of the crank cover 01.
  • the left side of the crank cover 01 is provided with a bottom bracket hole.
  • the bottom bracket is inserted into the bottom bracket hole and is threadedly connected to the frame bottom bracket 10.
  • the left side of the crank cover 01 is tightly clamped at the end of the bottom bracket. Between 09 and the end face of the frame shaft 10, the crank cover 01 is fixedly connected to the middle of the frame in this way.
  • the flywheel cover 03 is a half cover, that is, in order not to hinder the shifting of the rear dial, the position of the flywheel cover 03 corresponding to the rear dial mechanism is open.
  • the shape of the flywheel cover 03 is similar to the upper half of the flywheel. It is a semi-conical truncated box with a small radius on the right and a large radius on the left. Interference with the frame.
  • the flywheel cover 03 has a downward opening, and the flywheel cover 03 is provided with a flywheel cover chain outlet 22.
  • flywheel cover 03 In order to facilitate installation, through-holes are provided from the axle hole 16 to the opening, so that the flywheel cover 03 can be inserted into position from top to bottom without disassembling the flywheel, and then under the pressing force of the axle nut 17, the flywheel cover 03 The right side cover wall is clamped between the rear fork end piece 18 and the hub end 19, so that the flywheel cover 03 is fixedly connected to the rear of the frame.
  • the flywheel cover and the frame also include an integrated manufacturing method.
  • the flywheel cover and the rear fork end piece are made of carbon fiber in a mold; or the flywheel cover and the rear end piece are made by stamping.
  • the winding pipe 02 is made of a flexible material such as a fabric, a plastic film, or a rubber film.
  • the front / rear nozzles of the winding tube 02 are tightly sleeved on the chainring cover chain inlet 20 / flywheel cover chain 22 outlet, respectively, and are fixed by bonding (or using a pipe clamp or screw connection).
  • the lower chain pipe 07 is made of an elastically stretchable material such as an elastically stretchable fabric, an elastically stretchable rubber film, and the like, and the length after stretching is ⁇ the maximum length of the lower chain segment.
  • the front part of the lower chain tube 07 is tightly sleeved on the chain outlet 21 and fixed by means of bonding or the like.
  • the pivot joint 05 is tubular, and there are two ear plates behind the mouth, and a shaft hole is provided on the ear plate.
  • the pivot shaft 15 penetrates the shaft hole of the pivot joint 05 and the tension wheel shaft hole 12, and pivotally connects the pivot joint 05 with the lower part of the shifting leg 11.
  • the rear part of the down pipe 07 is tightly sleeved on the nozzle of the pivot joint 05 and fixed by means of bonding or the like. In this way, the direction of the lower chain pipe 07 and the front section of the lower chain section can always be consistent, so as to avoid friction between the lower chain pipe 07 and the chain and slow down the wear of the lower chain pipe 07.
  • This solution is particularly suitable for retrofitting, as long as the original tension wheel shaft is replaced with an extended pivot shaft 15. Since the lower tube 07 is elastically retractable, the lower tube 07 can automatically adapt to the length of the chain segment.
  • the dustproof cover 06 is made of a flexible material such as a fabric, a plastic film, or a rubber film.
  • the upper part of the dust cover 06 is tightly sleeved on the lower part of the flywheel cover 03 and fixed by means of bonding or screwing.
  • the lower part of the dust cover 06 is sleeved on the outside of the shifting leg 11 so that the dust cover 06 and the flywheel 03 are formed.
  • a substantially enclosed space covers the flywheel and rear dial.
  • this solution is applicable to a single-speed bicycle.
  • the crank cover is composed of a left cover body 27 and a right cover body 28 connected by screws.
  • the cover body 27 is provided with a hoop-shaped connecting portion 29 to be fixedly connected to the frame seat tube.
  • the flywheel cover is a full cover, that is, the box shape that the flywheel basically covers.
  • the flywheel cover is composed of a front cover body 30 and a rear cover body 31 fixedly connected with screws.
  • Each of the upper pipe 25 and the lower pipe 26 is made of a flexible material such as a fabric, a plastic film, or a rubber film.
  • Both ends of the winding pipe 25 are respectively fixed to the chain inlet of the crankshaft cover and the chain outlet of the flywheel cover by means of bonding (such as a screw or a ferrule).
  • the two ends of the lower chain pipe 26 are respectively fixed (or screws, or pipe clamps) fixed to the chain outlet of the crank cover and the chain inlet of the flywheel cover.
  • This example differs from Example 1 in that the crank cover is different.
  • At least two, preferably three, lifting eyes 35 are provided along the circumferential direction of the frame five-way, and three screw holes 37 are provided at corresponding positions on the left side of the crank cover 38.
  • Three screws (not shown) (Out) respectively through the holes of the lifting lugs 35 and then screwed into the screw holes 37, so that the crank cover 38 is fixedly connected to the frame.
  • the cover body (50; 51) can be regarded as a crankset cover cut along a diameter line of the crankset.
  • the cover bodies (50; 51) are docked together in a horizontal or vertical direction.
  • a semicircular arc-shaped mounting seat (52; 53) is fixedly connected by screws (adhesion, welding, etc.).
  • the mounting seat (52; 53) is clamped at the right end 55 (or the right end 56 of the external bearing type bottom bracket) of the five-way shell of the frame, and then the mounting seat (52; 53) is fixedly connected by screws, so that the crankset
  • the hood is fixedly attached to the frame.
  • the connection between the mounting seat (52; 53) and the frame is also applicable to the crank cover of other structures of the present invention.
  • the seatpost of the frame is provided with lifting eyes 60
  • the crankset cover is provided with lifting eyes 61, and the two are fixedly connected by screws.
  • This example differs from Embodiment 1 in that the legs are different.
  • the shifting leg 70 is tubular, the guide wheel 75 is pivotally connected to the upper part of the shifting leg 70, the tension wheel is pivotally connected to the lower part of the shifting leg 70, and the lower mouth 71 of the shifting leg 70 is directed toward the moving direction of the chain.
  • the rear mouth of the down chain pipe 73 is tightly sleeved on the mouth 71 and then fixedly connected by a pipe clamp 72.
  • FIG. 10 shows a solution suitable for protecting the existing shifting legs: the lower mouth of the sleeve 80 is moved in the direction of the chain.
  • the sleeve 80 is provided with a hole 81 at a position corresponding to the axis of the tension wheel.
  • the left end of the hole 81 is provided with an internal thread.
  • the sleeve 80 is sleeved on the outside of the dial 76.
  • the pivot 82 penetrates the hole 81 and the tension wheel hole 79 and is screwed in the hole.
  • the positioning screw 78 penetrates the hole of the sleeve 80, and is screwed into the guide screw hole 77, so that the sleeve 80 is fixedly connected to the dial 76.
  • the lower chain pipe 83 is tightly sleeved on the lower part of the sleeve 80 and fixed with a pipe clamp 84.
  • a connection scheme in which an adhesive is applied to the outside of the shifting leg and the inside of the sleeve to make the two adhere and fixed.
  • the shape of the lower mouth should ensure that there is a gap between the lower chain section and the front section of the lower chain pipe to reduce the friction of the two and reduce the running resistance of the chain. This is further explained below.
  • the picking leg 155 in the present case is further provided with an extension 156 below the tension wheel 160, and a screw hole seat (157 is provided above the tension wheel 160 and at the lower end of the extension 156; 158), the pipe joint 159 is fixedly connected to the screw hole seat (157; 158) with screws, and the lower chain pipe 161 is fixedly connected to the pipe joint 159.
  • the distance between the screw hole seat (157; 158) and the axis of the tension wheel 160 determines the gap between the front section of the lower tube 161 and the lower chain section.
  • FIG. 13 shows another pivoting scheme of the leg-turning part and the lower chain pipe: the front part of the pivot joint 165 is tubular, and the rear part has left and right ear plates, and short pivot shafts (168; 169) respectively penetrate the end of the ear plate
  • the shaft hole is fixed in the shaft hole (non-tension wheel shaft hole 170) on the pipe wall on both sides of the tubular shifting leg 166.
  • the lower chain pipe 167 is fixedly connected to the pivot joint 165.
  • This example differs from Embodiment 1 in that the flywheel cover is different.
  • the flywheel cover is a half cover, and the upper part 63 of the flywheel cover is a semi-conical truncated cone shape.
  • the position of the flywheel cover corresponding to the rear dial shift area is vacant.
  • the left cover wall of the upper portion 60 extends downward to form a protective plate 62.
  • the protective plate (65; 62) can support the dust cover from the inside to avoid friction between the dust cover and the flywheel.
  • the flywheel cover 120 is a half cover, and its shape is a box shape covering only the upper half of the flywheel.
  • a through-hole 121 is provided from the axle hole to the leading edge of the flywheel cover 120 so that the flywheel cover 120 can pass through Insert it in place until it covers the through slit 121 with a baffle 122 to strengthen the seal.
  • connection base is composed of a base 87 and a pressing cover 88.
  • the lower fork 86 is snapped into the groove of the base 87, and then the pressing cover 88 is fastened to the base 87 with screws 89.
  • the lower fork 86 and the flywheel cover 39 are fixedly connected together.
  • This solution can also be transformed into: 2 connection bases, one fixedly connected to the lower fork and the other fixedly connected to the upper fork; or both connection bases are fixedly connected to the upper fork.
  • the flywheel cover can only be fixedly connected to the link on which the axle is mounted.
  • the link 92 and the link 91 are connected to form a rear suspension frame by a pivot 96.
  • the axle mounting groove 95 is provided in the link 92.
  • the link 91 is rotatable relative to a flywheel cover (not shown). Then the flywheel cover can only be fixedly connected to the connecting rod 92: two buckles 93 fixedly connect the connecting rod 92 to the flywheel cover. (Similarly, if the axle mounting groove 95 is provided in the link 91, the flywheel cover must be fixedly connected to the link 91).
  • This example differs from Example 1 in that the upper and lower tubes are different.
  • the lower pipe 97 is a corrugated pipe made of an elastic material such as a rubber film, an elastic fabric, and the like.
  • the winding pipe (including flat pipe or corrugated pipe) can also be made of elastic material to fit different specifications of the frame.
  • the winding pipe 120 has a through-hole 121 that is fully through in the longitudinal direction, and several Velcros arranged along the through-hole 121 close the through-hole 121.
  • the chain pipe can be disassembled without disassembling the chain.
  • the winding pipe can also adopt a scheme of closing the through seam with a zipper; or similar to the shoelace, the through seam is closed with a lace.
  • the upper or lower pipe also includes multiple positioning and connection solutions, such as:
  • connection scheme of the chain tube and the flywheel cover shown in FIG. 20 and above shows another positioning connection solution: the upper chain pipe 99 is tightly connected to the chain outlet of the flywheel cover 98 and fixed with screws 100.
  • FIG. 21 is an example of a connection scheme between a chain pipe and a tubular shifting leg, which shows another positioning and connection scheme: the four corners of the lower mouth of the tubular shifting leg 101 and the four corners of the lower mouth of the chain pipe 102 are connected by short ropes 103, respectively.
  • This example is different from the first embodiment in that the dust cover is different.
  • the dust-proof cover 106 covers the entire leg 107, and the lower part of the dust-proof cover 106 extends to the rear of the lower chain pipe 105.
  • the lower part of the dustproof cover 108 and the rear part of the lower chain pipe 109 are an integral structure.
  • the dust cover 110 is provided with a P-axis hole 111 through which the rear dial P-axis 118 passes.
  • the P-axis hole 111 A through seam 112 is provided to the upper edge of the dust cover 110.
  • a gap 113 is provided on the left side of the dust cover 110.
  • the dustproof case 110 in this case only includes the rear dial part.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)

Abstract

A chain cover for protecting a crankset and an upper chain segment, the chain cover comprising: a crankset cover (01), a flywheel cover (03), and an upper chain tube (02). The crankset cover (01) is box-shaped, the crankset cover (01) is provided with a crankset cover chain inlet (20), and the crankset cover (01) is fixedly connected to the middle of a vehicle frame. The flywheel cover (03) is box-shaped, the flywheel cover (03) is provided with a flywheel cover chain outlet (22), and the flywheel cover (03) is integrally fabricated or fixedly connected to the tail of the vehicle frame. The upper chain tube (02) is flexible, a front portion of the upper chain tube (02) is positioned and connected to the crankset cover chain inlet (20), and a rear portion of the upper chain tube (02) is positioned and connected to the flywheel cover chain outlet (22). Since the upper chain tube (02) is flexible, the chain cover may be used for vehicle frames of different specifications, such that the chain cover is not easily damaged when colliding with the outside.

Description

一种链罩Chain cover 技术领域Technical field
本发明涉及一种自行车链传动系统保护装置。The invention relates to a protective device for a bicycle chain transmission system.
背景技术Background technique
现有技术的自行车链罩，因为采用刚性罩体的缘故，只能匹配相应规格的自行车车架，无法通用不同规格的车架，这将导致：1.生产商为适配市场上不同规格的自行车，需要生产多种相应的链罩，使生产组织相对更复杂，增加了制造成本。2.多种链罩也增加了销售商备货的复杂性，增加了流通成本。3.由于缺乏通用性，消费者在更换、维修链罩时的成本也会增加。另外、自行车难免出现摔车、磕碰等问题，刚性的罩体相比柔性的罩体在受到外力撞击时更容易损坏。另外、刚性薄壁的罩体，犹如乐器的共鸣箱，将链条击打罩体发出的噪音加以放大，降低了骑行的体验。另外、刚性结构的罩体相对较重。而自行车行业的特点之一就是对轻量化的追求没有止境。In the prior art bicycle chain cover, because of the rigid cover, it can only match the bicycle frame of the corresponding specification, and cannot use different specifications of the bicycle frame, which will lead to: 1. Manufacturers to adapt to different specifications of the market Bicycles need to produce a variety of corresponding chain covers, which complicates the production organization and increases manufacturing costs. 2. A variety of chain covers also increase the complexity of the seller's stocking and increase the cost of circulation. 3. Due to the lack of versatility, consumers will also increase the cost of replacing and repairing the chain cover. In addition, bicycles inevitably have problems such as crashing, bumping, and the like. A rigid cover is more likely to be damaged when subjected to an external force than a flexible cover. In addition, the rigid, thin-walled cover, like the resonance box of a musical instrument, amplifies the noise emitted by the chain hitting the cover, reducing the riding experience. In addition, the rigid structure of the cover is relatively heavy. One of the characteristics of the bicycle industry is the endless pursuit of lightweight.
专利NL1000573C2示出了一种适用于外变速自行车链罩，其上罩部(3)是由牙盘罩的后部(14)和飞轮罩的前部(15)组装而成的刚性构件，因而上罩部(3)还存在结构复杂，制造成本较高的问题。Patent NL1000573C2 shows a chain cover suitable for an outer shift bicycle. The upper cover portion (3) is a rigid member assembled from the rear portion (14) of the crank cover and the front portion (15) of the flywheel cover. The upper cover part (3) also has problems of complicated structure and high manufacturing cost.
在专利NL1000573C2文件中，下罩部(4)由波纹管(9)、硬质链管(8)、波纹管(10)顺序连接组成。下罩部(4)能伸缩以适应下链段(张力轮至牙盘间链段)长度的变化，是该链罩能适用变速自行车的关键。为了避免下罩部(4)被链条过早磨损，硬质链管(8)以尼龙或聚乙烯等耐磨材料制造，其内壁与链条滑动摩擦。但该发明存在如下问题：1.下罩部(4)由多零件组成，结构复杂、成本相对较高。2.下罩部(4)要承受后拨的拉力，而连接点越多、可靠性越低。3.硬质链管(8)相对较重。4.硬质链管(8)与链条的摩擦降低了传动效率，对自行车来说，这是较严重的缺陷。In the patent NL1000573C2, the lower cover part (4) is composed of a bellows (9), a rigid chain pipe (8), and a bellows (10) connected in sequence. The lower cover part (4) can expand and contract to adapt to the change of the length of the lower chain section (the chain section between the tension wheel and the chainring), which is the key for the chain cover to be suitable for variable speed bicycles. In order to prevent the lower cover part (4) from being prematurely worn by the chain, the hard chain pipe (8) is made of abrasion-resistant materials such as nylon or polyethylene, and its inner wall slides and rubs against the chain. However, the invention has the following problems: 1. The lower cover part (4) is composed of multiple parts, the structure is complicated, and the cost is relatively high. 2. The lower cover part (4) must withstand the pulling force of the rear dial, and the more connection points, the lower the reliability. 3. The hard chain tube (8) is relatively heavy. 4. The friction between the hard chain tube (8) and the chain reduces the transmission efficiency, which is a serious defect for bicycles.
发明内容Summary of the Invention
本发明的一个主要目的是提出一种对牙盘和上链段进行防护的链罩。A main object of the present invention is to provide a chain cover for protecting the chainring and the upper chain segment.
本发明的一个主要目的是使该链罩在与外界碰撞时不易损坏。A main object of the present invention is to make the chain cover difficult to be damaged when it collides with the outside world.
本发明的一个主要目的是使该链罩能通用常见规格的车架。A main object of the present invention is to enable the chain cover to be used in a common frame.
本发明的一个主要目的是使该链罩在骑行时噪音较低。One of the main objects of the present invention is to make the chain cover relatively quiet when riding.
本发明的一个主要目的是使该链罩具有较低的成本。A main object of the invention is to make the chain cover less costly.
本发明的一个主要目的是使该链罩具有较轻的重量。A main object of the present invention is to make the chain cover lighter.
为此，该链罩包括：牙盘罩、飞轮罩、上链管；牙盘罩为盒状；牙盘罩设有牙盘罩链条入口；牙盘罩固定连接在车架的中部；飞轮罩为盒状；飞轮罩设有飞轮罩链条出口；飞轮罩一体制造或固定连接在车架的尾部；上链管为柔性的；上链管的前部定位连接在牙盘罩链条入口、上链管的后部定位连接在飞轮罩链条出口。To this end, the chain cover includes: a crank cover, a flywheel cover, and a winding tube; the crank cover is box-shaped; the crank cover is provided with a crank cover chain entrance; the crank cover is fixedly connected to the middle of the frame; the flywheel cover It is box-shaped; the flywheel cover is provided with a flywheel cover chain outlet; the flywheel cover is integrally manufactured or fixedly connected to the rear of the frame; the winding tube is flexible; The rear of the tube is positioned at the flywheel cover chain outlet.
本发明为链传动系统提供了基本的防护方案，即仅对牙盘、上链段(牙盘至飞轮间链段)进行防护的方案。本发明具有如下优点：1.由于上链管为柔性，本发明能通用不同规格(牙盘与飞轮间不同的方位和距离)的车架：1.1.上链管无弹性。使上链管的初始长度能适用尺寸最大的车架即可，对于尺寸较小的车架，可将上链管多余部分截断；或将上链管多余部分卷在一起。1.2.上链管有弹性。上链管收缩后能适用小尺寸车架、拉伸后能适用大尺寸车架。2.由于本链罩具有广泛的通用性，使得生产商、销售商、消费者的成本均得以降低；另外上链管结构简单，其制造成本也较低。3.由于上链管以柔性材料(例如织物)制成，相比刚性材质的链罩，本链罩重量更轻。4.由于上链管为柔性、且上链管使牙盘罩与飞轮罩不再刚性的结合为一体，摔车、磕碰对本链罩造成损坏的可能性远低于刚性的链罩。5.柔性的上链管几乎不产生噪音；加上牙盘罩和飞轮罩被上链管柔性的连接，降低了链罩因自身振动而发出的噪音，避免了共鸣箱效应，因此本链罩骑行时较为安静。The invention provides a basic protection scheme for the chain transmission system, that is, a scheme for protecting only the chainring and the upper chain segment (the chain segment between the chainring and the flywheel). The present invention has the following advantages: 1. Because the winding pipe is flexible, the present invention can universally use frames of different specifications (different orientations and distances between the crankset and the flywheel): 1.1. The winding pipe is inelastic. The initial length of the winding tube can be applied to the frame with the largest size. For smaller frames, the excess portion of the winding tube can be cut off; or the excess portion of the winding tube can be rolled together. 1.2. The winding tube is elastic. The winding tube can be applied to small-sized frames after being retracted, and can be applied to large-sized frames after being stretched. 2. Due to the wide universality of the chain cover, the costs of manufacturers, sellers, and consumers can be reduced; in addition, the winding pipe has a simple structure and its manufacturing cost is also low. 3. Since the winding tube is made of a flexible material (such as fabric), the chain cover is lighter than a chain cover made of a rigid material. 4. Since the winding tube is flexible and the winding tube makes the crank cover and the flywheel cover no longer rigidly integrated into one body, the possibility of damage to the chain cover caused by crashing or bumping is much lower than the rigid chain cover. 5. The flexible winding tube produces almost no noise; coupled with the flexible connection of the chainring cover and the flywheel cover by the winding tube, the noise generated by the chain cover due to its own vibration is reduced, and the resonance box effect is avoided. Quiet when riding.
本发明的一个次要目的是对下链段进行防护。A secondary object of the present invention is to protect the lower link.
本发明的一个次要目的是减少下链段的传动损耗。A secondary object of the present invention is to reduce the transmission loss of the lower link.
本发明的一个次要目的是使链罩的成本较低。A secondary object of the present invention is to make the cost of the chain cover lower.
本发明的一个次要目的是使链罩的重量较轻。A secondary object of the present invention is to make the chain cover lighter.
本发明的一个次要目的是提高链罩的可靠性。A secondary object of the present invention is to improve the reliability of the chain cover.
为此，本发明链罩还包括下链管；下链管由弹性材料制成；牙盘罩设有牙盘罩链条出口；下链管的前部定位连接在牙盘罩链条出口；下链管的后部定位连接在拨腿部。To this end, the chain cover of the present invention also includes a lower chain tube; the lower chain tube is made of an elastic material; the chain plate cover is provided with a chain plate cover chain outlet; the front part of the chain pipe is positioned and connected to the chain plate cover chain outlet; The rear part of the tube is positioned and connected to the dial.
本发明以下链管替代专利NL1000573C2中波纹管和硬质链管组合而成的下罩部，相比拼装结构的下罩部，结构简单的下链管可靠性更高、成本更低。下链管以弹性材料(例如弹性织物、橡胶膜等)制成，其重量较轻。本发明克服了以耐磨材料“硬”抵抗链条摩擦的技术偏见：本发明中，弹性的下链管能随链条的运动而形变，使得二者间摩擦极小，既降低了链条的传动损耗，又减缓了下链管的磨耗；由于下链管的成本极低，因而本发明将下链管视为消耗品，磨耗后更换即可。The following chain pipe of the present invention replaces the lower cover part of the combination of the bellows and the hard chain pipe in the patent NL1000573C2. Compared with the lower cover part of the assembled structure, the simple structure of the lower chain pipe has higher reliability and lower cost. The lower tube is made of elastic material (such as elastic fabric, rubber film, etc.), and its weight is light. The present invention overcomes the technical prejudice of "hard" resisting chain friction with abrasion-resistant materials: In the present invention, the elastic lower chain tube can be deformed with the movement of the chain, so that the friction between the two is extremely small, and the transmission loss of the chain is reduced It also reduces the wear of the down-link tube; since the cost of the down-link tube is extremely low, the present invention regards the down-link tube as a consumable and can be replaced after wear.
一个优选的方案是：拨腿部为管状，拨腿部的下口朝向链条移入方向；下链管的后部定位连接在拨腿部的下口。A preferred solution is that the leg part is tubular, and the lower mouth of the leg part faces the chain moving direction; the rear part of the lower chain tube is positioned and connected to the lower mouth of the leg part.
本方案以管状的拨腿部对导轮、张力轮及二者之间链段进行保护。This solution protects the guide wheel, the tension wheel, and the chain segment between them by using a tubular leg part.
一个优选的方案是：本发明链罩还包括套管；套管固定套在拨腿部，套管的下口朝向链条移入方向；下链管的后部定位连接在套管的下口。A preferred solution is that the chain cover of the present invention further comprises a sleeve; the sleeve is fixedly sleeved on the leg part, and the lower mouth of the sleeve is directed to the moving direction of the chain; the rear part of the lower chain pipe is positioned and connected to the lower mouth of the sleeve.
本方案以套管对拨腿部进行保护。This solution uses sleeves to protect the legs.
一个优选的方案是：下链管的后部以张力轮轴为枢轴，枢接在拨腿部。A preferred solution is that the rear part of the lower chain pipe is pivoted on the tension wheel shaft and is pivotally connected to the leg shifter.
本方案利用张力轮轮轴为枢轴，具有通用性好、拆装便捷的优点。This solution uses the tension wheel axle as the pivot, which has the advantages of good versatility and convenient disassembly and assembly.
本发明的一个次要目的是增强链罩的密封性。A secondary object of the present invention is to enhance the tightness of the chain cover.
本发明的一个次要目的是对变速机构进行保护。A secondary object of the present invention is to protect a transmission mechanism.
为此，飞轮罩为半罩；本发明链罩还包括防尘套；防尘套为柔性的；防尘套与飞轮罩固定连接组成基本密闭的空间，以将拨腿部以及飞轮罩住。To this end, the flywheel cover is a half cover; the chain cover of the present invention also includes a dust cover; the dust cover is flexible; the dust cover is fixedly connected to the flywheel cover to form a basically closed space, so as to cover the legs and the flywheel.
本方案对传动系统进行了全方位的防护，有效的提高了传动系统的可靠性。This solution protects the transmission system in all directions and effectively improves the reliability of the transmission system.
本发明的一个次要目的是，提出一种适用于单速自行车的全链罩。A secondary object of the present invention is to provide a full chain cover suitable for a single speed bicycle.
为此，飞轮罩为全罩；飞轮罩设有飞轮罩链条入口；下链管的后部定位连接在飞轮罩链条入口。To this end, the flywheel cover is a full cover; the flywheel cover is provided with a flywheel cover chain inlet; the rear part of the lower chain tube is positioned and connected to the flywheel cover chain inlet.
该方案链罩将单速自行车的链传动机构置于其内，隔绝了外界不良影响，提升了可靠性、减少了维护工作量，延长了使用寿命。由于下链管、上链管均为柔性，该方案的链罩同样具有通用性广、噪音低、成本低、重量轻、安装容易的优点。In this solution, the chain cover puts the chain transmission mechanism of the single-speed bicycle in it, which isolates the bad influences from the outside world, improves reliability, reduces maintenance workload, and extends service life. Because the lower and upper tubes are both flexible, the chain cover of this solution also has the advantages of wide versatility, low noise, low cost, light weight, and easy installation.
本发明的一个次要目的是，使本链罩适用于后避震车架。A secondary object of the present invention is to make the chain cover suitable for a rear suspension frame.
为此，飞轮罩固定连接在后轮轴所连接的车架杆件。For this reason, the flywheel cover is fixedly connected to the frame rod connected to the rear wheel axle.
一个优选的飞轮罩与车架的连接方案是：飞轮罩的罩壁被夹紧在后叉端片和花鼓端部之间。A preferred scheme for connecting the flywheel cover to the frame is that the cover wall of the flywheel cover is clamped between the fork end piece and the hub end.
该方案具有通用性广的优点，不论硬尾车架还是软尾车架都能无改装使用。This solution has the advantage of wide versatility, regardless of whether the hard or soft tail frame can be used without modification.
本发明的一个次要目的是，使链罩能通用常见规格的车架。A secondary object of the present invention is to enable the chain cover to be used in a common frame.
为此，上链管为弹性伸缩的。For this reason, the winding tube is elastically stretchable.
本发明的另一个次要目的是能便捷的打开上链管以检修链条。Another secondary object of the present invention is to be able to conveniently open the winding tube for servicing the chain.
为此，上链管具有纵向全通的，能打开和封闭的贯通缝。For this reason, the winding pipe has a longitudinally through hole, which can be opened and closed.
附图说明BRIEF DESCRIPTION OF THE DRAWINGS
下面接合附图对本发明的具体说明方式进一步的详细说明：The detailed description of the present invention will be described in detail below with reference to the drawings:
图1、实施例1链罩的整体示意图。FIG. 1 is an overall schematic view of a chain cover of Embodiment 1. FIG.
图2、实施例1链罩的分解图。Fig. 2 is an exploded view of the chain cover of the first embodiment.
图3、实施例1飞轮罩的安装示意图。FIG. 3 is a schematic diagram of the installation of the flywheel cover in Embodiment 1. FIG.
图4、实施例1下链管与拨腿的连接示意图。FIG. 4 is a schematic diagram of a connection between a lower chain tube and a shift leg in Embodiment 1. FIG.
图5、实施例2适用于单速自行车的链罩的示意图。FIG. 5 is a schematic diagram of a chain cover suitable for a single-speed bicycle in Embodiment 2. FIG.
图6、实施例2牙盘罩与车架的连接示意图。FIG. 6 is a schematic diagram of a connection between a crank cover and a frame in Embodiment 2. FIG.
图7、实施例2一种牙盘罩、该牙盘罩与车架的连接示意图。FIG. 7 is a schematic diagram of a crankset cover and the connection between the crankset cover and a vehicle frame in Embodiment 2. FIG.
图8、实施例2牙盘罩与车架的连接示意图。FIG. 8 is a schematic diagram of a connection between a crankset cover and a frame in Embodiment 2. FIG.
图9、实施例3管状拨腿与下链管的连接示意图。FIG. 9 is a schematic diagram of a connection between a tubular shifting leg and a lower chain pipe in Embodiment 3. FIG.
图10、实施例3套管、拨腿和下链管的连接示意图。FIG. 10 is a schematic diagram of a connection between a sleeve, a leg and a lower chain pipe according to Embodiment 3. FIG.
图11、实施例3下链段与下链管前段冗隙的示意图。FIG. 11 is a schematic diagram of a gap between a lower link and a front link of a lower pipe in Embodiment 3. FIG.
图12、实施例3一种拨腿与下链管的固定连接示意图。FIG. 12 is a schematic diagram of a fixed connection between a shifting leg and a lower chain pipe in Embodiment 3. FIG.
图13、实施例3一种管状拨腿与下链管的枢接示意图。FIG. 13 is a schematic diagram of a pivotal connection between a tubular shifting leg and a lower chain pipe in Embodiment 3. FIG.
图14、实施例4一种飞轮罩的示意图。FIG. 14 is a schematic diagram of a flywheel cover in Embodiment 4. FIG.
图15、实施例4一种飞轮罩的示意图。FIG. 15 is a schematic diagram of a flywheel cover in Embodiment 4. FIG.
图16、实施例4一种飞轮罩与车架的连接方案的示意图。FIG. 16 is a schematic diagram of a connection scheme between a flywheel cover and a frame in Embodiment 4. FIG.
图17、实施例4一种飞轮罩与避震车架的连接方案的示意图。FIG. 17 is a schematic diagram of a connection scheme between a flywheel cover and a suspension frame in Embodiment 4. FIG.
图18、实施例5一种下链管的示意图。FIG. 18 is a schematic diagram of a down-chain pipe of Embodiment 5. FIG.
图19、实施例5一种上链管的示意图。FIG. 19 is a schematic view of a winding pipe of Embodiment 5. FIG.
图20、实施例5一种上链管与飞轮罩的连接示意图。FIG. 20 is a schematic diagram of a connection between a winding pipe and a flywheel cover in Embodiment 5. FIG.
图21、实施例5一种下链管与管状拨腿的连接示意图。FIG. 21 is a schematic diagram of a connection between a lower chain pipe and a tubular shifting leg in Embodiment 5. FIG.
图22、实施例6一种防尘套的示意图。FIG. 22 is a schematic diagram of a dustproof cover of Embodiment 6. FIG.
图23、实施例6一种防尘套的示意图。FIG. 23 is a schematic diagram of a dustproof case in Embodiment 6. FIG.
图24、实施例6一种防尘套的示意图。FIG. 24 is a schematic diagram of a dustproof cover in Embodiment 6. FIG.
具体实施方式Detailed ways
实施例1Example 1
如图1至图4所示，牙盘罩01为罩在牙盘外部的盒状，为适应多片式牙盘的外形，优选牙盘罩01左壁为圆锥台状。为了方便安装牙盘，优选牙盘罩01的右侧罩壁设有牙盘孔，以及封闭牙盘孔的盖板08。盖板08的中央设有容纳曲柄通过的贯通孔。盖板08的外周具有凸缘，凸缘插入牙盘孔并以摩擦力固定。在对应链条移入/移出的位置，牙盘罩01设有牙盘罩链条入口20和牙盘罩链条出口21。为了方便连接上链管02，链条入口20和链条出口21凸出牙盘罩01的表面。牙盘罩01的左侧罩壁设有中轴孔，中轴插入中轴孔并以螺纹连接在车架中轴10内，牙盘罩01的左侧罩壁被紧夹在中轴端部09和车架中轴10的端面之间，如此将牙盘罩01固定连接在车架中部。As shown in FIG. 1 to FIG. 4, the crank cover 01 is a box shape covering the outer part of the crank. In order to adapt to the shape of a multi-piece crank, the left wall of the crank cover 01 is preferably a truncated cone shape. In order to facilitate the installation of the crankset, it is preferable that a crankshaft hole is provided on the right side of the crankshaft cover 01 and a cover plate 08 which closes the crankshaft hole. A through hole is formed in the center of the cover plate 08 to accommodate the passage of the crank. The outer periphery of the cover plate 08 has a flange, and the flange is inserted into the crank hole and is fixed with friction. At the position where the corresponding chain is moved in / out, the crank cover 01 is provided with a crank cover chain inlet 20 and a crank cover chain outlet 21. In order to facilitate the connection of the winding tube 02, the chain inlet 20 and the chain outlet 21 protrude from the surface of the crank cover 01. The left side of the crank cover 01 is provided with a bottom bracket hole. The bottom bracket is inserted into the bottom bracket hole and is threadedly connected to the frame bottom bracket 10. The left side of the crank cover 01 is tightly clamped at the end of the bottom bracket. Between 09 and the end face of the frame shaft 10, the crank cover 01 is fixedly connected to the middle of the frame in this way.
飞轮罩03为半罩，即为了不妨碍后拨的变速，飞轮罩03对应后拨机构的位置为开放的。优选飞轮罩03形似飞轮上半部的外形，为右侧半径小而左侧半径大的半圆锥台形的盒状，这样既能最小化飞轮罩03的外形又能避免飞轮罩03因安装空间狭窄而与车架发生干涉。飞轮罩03具有朝下的敞口，飞轮罩03设有飞轮罩链条出口22。飞轮罩03具有轮轴孔16，右侧轮轴孔16直径＝轮轴直径，左侧轮轴孔16直径＞花鼓的直径。为方便安装，轮轴孔16至敞口设有贯通槽，使飞轮罩03能在不拆卸飞轮的前提下，由上至下插入就位，然后在轮轴螺母17的紧压作用下，飞轮罩03的右侧罩壁被夹紧在后叉端片18与花鼓端部19之间，如此就将飞轮罩03固定连接在车架尾部。注：飞轮罩与车架还包括一体制造的方式，例如飞轮罩和后叉端片由碳纤维在模具中一体制成；或飞轮罩和后叉端片采用冲压工艺一体制成。The flywheel cover 03 is a half cover, that is, in order not to hinder the shifting of the rear dial, the position of the flywheel cover 03 corresponding to the rear dial mechanism is open. Preferably, the shape of the flywheel cover 03 is similar to the upper half of the flywheel. It is a semi-conical truncated box with a small radius on the right and a large radius on the left. Interference with the frame. The flywheel cover 03 has a downward opening, and the flywheel cover 03 is provided with a flywheel cover chain outlet 22. The flywheel cover 03 has an axle hole 16, the diameter of the right axle hole 16 = the axle diameter, and the diameter of the left axle hole 16> the diameter of the hub. In order to facilitate installation, through-holes are provided from the axle hole 16 to the opening, so that the flywheel cover 03 can be inserted into position from top to bottom without disassembling the flywheel, and then under the pressing force of the axle nut 17, the flywheel cover 03 The right side cover wall is clamped between the rear fork end piece 18 and the hub end 19, so that the flywheel cover 03 is fixedly connected to the rear of the frame. Note: The flywheel cover and the frame also include an integrated manufacturing method. For example, the flywheel cover and the rear fork end piece are made of carbon fiber in a mold; or the flywheel cover and the rear end piece are made by stamping.
上链管02以例如织物、塑料膜或橡胶膜等柔性材料制成。上链管02前/后的管口分别紧套在牙盘罩链条入口20/飞轮罩链条22出口，并粘接(或以管箍、或螺钉连接)固定。The winding pipe 02 is made of a flexible material such as a fabric, a plastic film, or a rubber film. The front / rear nozzles of the winding tube 02 are tightly sleeved on the chainring cover chain inlet 20 / flywheel cover chain 22 outlet, respectively, and are fixed by bonding (or using a pipe clamp or screw connection).
下链管07由弹性伸缩材料例如能弹性伸缩的织物、能弹性伸缩的橡胶膜等制成，其拉伸后的长度≥下链段的最大长度。下链管07的前部紧套在链条出口21并以粘接等方式固定。枢接头05为管状，其管口后方设有2个耳板，耳板上设有轴孔。枢轴15贯穿枢接头05的轴孔、张力轮轴孔12，将枢接头05与拨腿11的下部枢接。下链管07的后部紧套在枢接头05的管口并以粘接等方式固定。这样就能使下链管07与下链段前段的走向始终保持一致，以避免下链管07与链条摩擦、减缓下链管07的磨损。本方案特别适合改装，只需将原张力轮轴更换为加长的枢轴15即可。由于下链管07为弹性伸缩的，因此下链管07能自动适应链段的长度。The lower chain pipe 07 is made of an elastically stretchable material such as an elastically stretchable fabric, an elastically stretchable rubber film, and the like, and the length after stretching is ≥ the maximum length of the lower chain segment. The front part of the lower chain tube 07 is tightly sleeved on the chain outlet 21 and fixed by means of bonding or the like. The pivot joint 05 is tubular, and there are two ear plates behind the mouth, and a shaft hole is provided on the ear plate. The pivot shaft 15 penetrates the shaft hole of the pivot joint 05 and the tension wheel shaft hole 12, and pivotally connects the pivot joint 05 with the lower part of the shifting leg 11. The rear part of the down pipe 07 is tightly sleeved on the nozzle of the pivot joint 05 and fixed by means of bonding or the like. In this way, the direction of the lower chain pipe 07 and the front section of the lower chain section can always be consistent, so as to avoid friction between the lower chain pipe 07 and the chain and slow down the wear of the lower chain pipe 07. This solution is particularly suitable for retrofitting, as long as the original tension wheel shaft is replaced with an extended pivot shaft 15. Since the lower tube 07 is elastically retractable, the lower tube 07 can automatically adapt to the length of the chain segment.
为不阻碍后拨动作，防尘套06以例如织物、塑料膜或橡胶膜等柔性材料制成。防尘套06的上部紧套在飞轮罩03的下部并以粘接或螺钉固定等方式固定，防尘套06的下部 套在拨腿11的外部，这样防尘套06与飞轮03就组成了一个基本密闭的空间将飞轮以及后拨罩住。In order not to hinder the rear dial movement, the dustproof cover 06 is made of a flexible material such as a fabric, a plastic film, or a rubber film. The upper part of the dust cover 06 is tightly sleeved on the lower part of the flywheel cover 03 and fixed by means of bonding or screwing. The lower part of the dust cover 06 is sleeved on the outside of the shifting leg 11 so that the dust cover 06 and the flywheel 03 are formed. A substantially enclosed space covers the flywheel and rear dial.
实施例2Example 2
与实施例1不同，本方案适用于单速自行车。Different from Embodiment 1, this solution is applicable to a single-speed bicycle.
如图5所示，牙盘罩由左罩体27和右罩体28以螺钉固定连接组成。罩体27设有管箍状连接部29以固定连接在车架座管。飞轮罩为全罩，即将飞轮基本罩住的盒状。优选飞轮罩由前罩体30和后罩体31以螺钉固定连接组成。上链管25、下链管26均由例如织物、塑料膜、橡胶膜等柔性材料制成。上链管25的两端分别以粘接(螺钉、或管箍等方式)固定在牙盘罩的链条入口、飞轮罩的链条出口。下链管26的两端分别粘接(或螺钉、管箍)固定在牙盘罩的链条出口、飞轮罩的链条入口。As shown in FIG. 5, the crank cover is composed of a left cover body 27 and a right cover body 28 connected by screws. The cover body 27 is provided with a hoop-shaped connecting portion 29 to be fixedly connected to the frame seat tube. The flywheel cover is a full cover, that is, the box shape that the flywheel basically covers. Preferably, the flywheel cover is composed of a front cover body 30 and a rear cover body 31 fixedly connected with screws. Each of the upper pipe 25 and the lower pipe 26 is made of a flexible material such as a fabric, a plastic film, or a rubber film. Both ends of the winding pipe 25 are respectively fixed to the chain inlet of the crankshaft cover and the chain outlet of the flywheel cover by means of bonding (such as a screw or a ferrule). The two ends of the lower chain pipe 26 are respectively fixed (or screws, or pipe clamps) fixed to the chain outlet of the crank cover and the chain inlet of the flywheel cover.
实施例3Example 3
本例与实施例1的不同之处是，牙盘罩不同。This example differs from Example 1 in that the crank cover is different.
如图6所示，沿车架五通的周向设有至少2个，优选3个吊耳35，牙盘罩38左侧罩壁的对应位置设有3个螺孔37。3枚螺钉(未示出)分别贯穿吊耳35的孔再旋紧在螺孔37，以使牙盘罩38固定连接在车架。As shown in FIG. 6, at least two, preferably three, lifting eyes 35 are provided along the circumferential direction of the frame five-way, and three screw holes 37 are provided at corresponding positions on the left side of the crank cover 38. Three screws (not shown) (Out) respectively through the holes of the lifting lugs 35 and then screwed into the screw holes 37, so that the crank cover 38 is fixedly connected to the frame.
如图7所示，罩体(50；51)可看成牙盘罩沿牙盘的直径线剖开而成。优选罩体(50；51)沿水平或竖直方向对接在一起。在罩体(50；51)左侧的罩壁，分别以螺钉(粘接、或焊接等方式)固定连接了半圆弧状的安装座(52；53)。安装座(52；53)夹持在车架五通壳的右端55(或外挂轴承式中轴的右端56)，再以螺钉将安装座(52；53)固定连接在一起，从而使牙盘罩固定连接在车架。注：安装座(52；53)与车架的连接方式，也适用于本发明其他结构的牙盘罩。As shown in FIG. 7, the cover body (50; 51) can be regarded as a crankset cover cut along a diameter line of the crankset. Preferably, the cover bodies (50; 51) are docked together in a horizontal or vertical direction. On the cover wall on the left side of the cover body (50; 51), a semicircular arc-shaped mounting seat (52; 53) is fixedly connected by screws (adhesion, welding, etc.). The mounting seat (52; 53) is clamped at the right end 55 (or the right end 56 of the external bearing type bottom bracket) of the five-way shell of the frame, and then the mounting seat (52; 53) is fixedly connected by screws, so that the crankset The hood is fixedly attached to the frame. Note: The connection between the mounting seat (52; 53) and the frame is also applicable to the crank cover of other structures of the present invention.
如图8所示，车架座管设有吊耳60，牙盘罩设有吊耳61，二者以螺钉固定连接。As shown in FIG. 8, the seatpost of the frame is provided with lifting eyes 60, and the crankset cover is provided with lifting eyes 61, and the two are fixedly connected by screws.
实施例4Example 4
本例与实施例1的不同之处是，拨腿部不同。This example differs from Embodiment 1 in that the legs are different.
如图9所示，拨腿70为管状，导轮75枢接在拨腿70内部的上部，张力轮枢接在拨腿70内部的下部，拨腿70的下口71朝向链条的移入方向。下链管73后部管口紧套在管口71、再以管箍72固定连接。As shown in FIG. 9, the shifting leg 70 is tubular, the guide wheel 75 is pivotally connected to the upper part of the shifting leg 70, the tension wheel is pivotally connected to the lower part of the shifting leg 70, and the lower mouth 71 of the shifting leg 70 is directed toward the moving direction of the chain. The rear mouth of the down chain pipe 73 is tightly sleeved on the mouth 71 and then fixedly connected by a pipe clamp 72.
图10示出了一种适用于对现有拨腿进行保护的方案：套管80的下口朝向链条移入方向。套管80对应张力轮轴心的位置设有孔81，孔81的左端具有内螺纹，套管80套在拨腿76的外部，枢轴82贯穿孔81、张力轮孔79，再旋紧在孔81的左端，定位螺钉78贯 穿套管80的孔，再旋紧在导板螺孔77内，这样就使套管80与拨腿76固定连接。下链管83紧套在套管80的下部并以管箍84固定。注：除了以螺钉连接的方案外，还可采用在拨腿外侧与套管内侧涂粘接剂，使二者粘接固定的连接方案。FIG. 10 shows a solution suitable for protecting the existing shifting legs: the lower mouth of the sleeve 80 is moved in the direction of the chain. The sleeve 80 is provided with a hole 81 at a position corresponding to the axis of the tension wheel. The left end of the hole 81 is provided with an internal thread. The sleeve 80 is sleeved on the outside of the dial 76. The pivot 82 penetrates the hole 81 and the tension wheel hole 79 and is screwed in the hole. At the left end of 81, the positioning screw 78 penetrates the hole of the sleeve 80, and is screwed into the guide screw hole 77, so that the sleeve 80 is fixedly connected to the dial 76. The lower chain pipe 83 is tightly sleeved on the lower part of the sleeve 80 and fixed with a pipe clamp 84. Note: In addition to the scheme of screw connection, a connection scheme in which an adhesive is applied to the outside of the shifting leg and the inside of the sleeve to make the two adhere and fixed.
下口的形状应保证下链段与下链管前段间具有冗隙，以减缓二者的摩耗、减少链条运行阻力。下面对此进一步的说明。The shape of the lower mouth should ensure that there is a gap between the lower chain section and the front section of the lower chain pipe to reduce the friction of the two and reduce the running resistance of the chain. This is further explained below.
如图11A、图11B所示，下链管152前段与下链段151之间具有冗隙(H1；H2)，这是由套管150的下口构造决定的，即由下口下沿距张力轮轴心的矢量L1、下口上沿距张力轮轴心的矢量L2决定的。对于不同参数(链节高度；牙盘与飞轮的齿数、距离；导轮至张力轮的轮距等)的传动系统，本领域技术人员可通过简单的图上模拟得出L1/L2的值，或以简单的实物实验得出。As shown in FIG. 11A and FIG. 11B, there is a gap (H1; H2) between the front section of the lower chain pipe 152 and the lower chain section 151, which is determined by the lower mouth structure of the sleeve 150, that is, the lower edge distance of the lower mouth The vector L1 of the tension wheel axis is determined by the vector L2 of the lower edge from the tension wheel axis. For transmission systems with different parameters (chain link height; number of teeth between the chainring and the flywheel; distance between the guide wheel and the tension wheel, etc.), a person skilled in the art can simulate the value of L1 / L2 through a simple diagram, Or by simple physical experiments.
如图12所示，和现有技术拨腿不同，本案拨腿155在张力轮160的下方还设有延长部156，张力轮160的上方和延长部156的下端设有螺孔座(157；158)，管接头159以螺钉固定连接在螺孔座(157；158)，下链管161固定对接在管接头159。本案中，螺孔座(157；158)与张力轮160轴心的距离，决定了下链管161前段与下链段之间的冗隙。As shown in FIG. 12, unlike the prior art picking leg, the picking leg 155 in the present case is further provided with an extension 156 below the tension wheel 160, and a screw hole seat (157 is provided above the tension wheel 160 and at the lower end of the extension 156; 158), the pipe joint 159 is fixedly connected to the screw hole seat (157; 158) with screws, and the lower chain pipe 161 is fixedly connected to the pipe joint 159. In this case, the distance between the screw hole seat (157; 158) and the axis of the tension wheel 160 determines the gap between the front section of the lower tube 161 and the lower chain section.
图13示出了拨腿部与下链管的另一种枢接方案：枢接头165前部为管状，后部具有左右耳板，短枢轴(168；169)分别贯穿耳板端部的轴孔，再固定在管状拨腿166两侧管壁的轴孔(非张力轮轴孔170)内。下链管167固定连接在枢接头165。FIG. 13 shows another pivoting scheme of the leg-turning part and the lower chain pipe: the front part of the pivot joint 165 is tubular, and the rear part has left and right ear plates, and short pivot shafts (168; 169) respectively penetrate the end of the ear plate The shaft hole is fixed in the shaft hole (non-tension wheel shaft hole 170) on the pipe wall on both sides of the tubular shifting leg 166. The lower chain pipe 167 is fixedly connected to the pivot joint 165.
实施例5Example 5
本例与实施例1的不同之处是，飞轮罩不同。This example differs from Embodiment 1 in that the flywheel cover is different.
如图14所示，飞轮罩为半罩，飞轮罩的上部63为半圆锥台状，飞轮罩对应后拨变速区的位置为空缺，上部63的右后侧罩壁向下延伸形成护板65，上部60的左侧罩壁向下延伸形成护板62。护板(65；62)能从内侧对防尘套加以支撑，避免防尘套与飞轮磨擦。As shown in FIG. 14, the flywheel cover is a half cover, and the upper part 63 of the flywheel cover is a semi-conical truncated cone shape. The position of the flywheel cover corresponding to the rear dial shift area is vacant. The left cover wall of the upper portion 60 extends downward to form a protective plate 62. The protective plate (65; 62) can support the dust cover from the inside to avoid friction between the dust cover and the flywheel.
如图15所示，飞轮罩120为半罩，其形状为仅罩住飞轮上半部的盒状，由轮轴孔至飞轮罩120的前沿设有贯通缝121，以使飞轮罩120能由后至前插入就位，再以挡板122遮挡贯通缝121以加强密封。As shown in FIG. 15, the flywheel cover 120 is a half cover, and its shape is a box shape covering only the upper half of the flywheel. A through-hole 121 is provided from the axle hole to the leading edge of the flywheel cover 120 so that the flywheel cover 120 can pass through Insert it in place until it covers the through slit 121 with a baffle 122 to strengthen the seal.
如图16所示，飞轮罩85的右侧罩壁设有2个连接座。连接座由基座87与压盖88组成。安装时，使下叉86卡入基座87的凹槽中，再以螺钉89将压盖88与基座87紧固。如此就使下叉86与飞轮罩39固定连接在一起。注：本方案还可衍化成：2个连接座，一个固定连接下叉，另一个固定连接上叉；或2个连接座均固定连接上叉。As shown in FIG. 16, the right side cover wall of the flywheel cover 85 is provided with two connection seats. The connection base is composed of a base 87 and a pressing cover 88. During installation, the lower fork 86 is snapped into the groove of the base 87, and then the pressing cover 88 is fastened to the base 87 with screws 89. In this way, the lower fork 86 and the flywheel cover 39 are fixedly connected together. Note: This solution can also be transformed into: 2 connection bases, one fixedly connected to the lower fork and the other fixedly connected to the upper fork; or both connection bases are fixedly connected to the upper fork.
对于具有避震功能的多连杆的后车架，飞轮罩只能与安装轮轴的那根连杆固定连接。 例如图17所示，连杆92与连杆91以枢轴96连接成后避震车架。轮轴安装槽95设于连杆92。连杆91相对飞轮罩(未示出)能够转动。则飞轮罩只能与连杆92固定连接：2个卡扣93将连杆92与飞轮罩固定连接。(同理，假如轮轴安装槽95设于连杆91，则飞轮罩必须与连杆91固定连接)。For a multi-link rear frame with a shock-absorbing function, the flywheel cover can only be fixedly connected to the link on which the axle is mounted. For example, as shown in FIG. 17, the link 92 and the link 91 are connected to form a rear suspension frame by a pivot 96. The axle mounting groove 95 is provided in the link 92. The link 91 is rotatable relative to a flywheel cover (not shown). Then the flywheel cover can only be fixedly connected to the connecting rod 92: two buckles 93 fixedly connect the connecting rod 92 to the flywheel cover. (Similarly, if the axle mounting groove 95 is provided in the link 91, the flywheel cover must be fixedly connected to the link 91).
实施例6Example 6
本例与实施例1的不同之处是，上链管和下链管不同。This example differs from Example 1 in that the upper and lower tubes are different.
如图18所示，下链管97为弹性材料如橡胶膜、弹性织物等制成的波纹管。As shown in FIG. 18, the lower pipe 97 is a corrugated pipe made of an elastic material such as a rubber film, an elastic fabric, and the like.
上链管(包括平管或波纹管)也可由弹性材料制成，以适应不同规格的车架。The winding pipe (including flat pipe or corrugated pipe) can also be made of elastic material to fit different specifications of the frame.
如图19所示，上链管120具有纵向全通的贯通缝121，数个沿贯通缝121布置的魔术贴将贯通缝121封闭。这样就可以在不拆卸链条的情况下拆装上链管。此外，上链管还可采用拉链封闭贯通缝的方案；或类似系鞋带那样，以系带的方式将贯通缝封闭。As shown in FIG. 19, the winding pipe 120 has a through-hole 121 that is fully through in the longitudinal direction, and several Velcros arranged along the through-hole 121 close the through-hole 121. In this way, the chain pipe can be disassembled without disassembling the chain. In addition, the winding pipe can also adopt a scheme of closing the through seam with a zipper; or similar to the shoelace, the through seam is closed with a lace.
上链管或下链管还包括多种定位连接方案，例如：The upper or lower pipe also includes multiple positioning and connection solutions, such as:
图20以上链管与飞轮罩的连接方案为例，示出了另一种定位连接方案：上链管99紧对接在飞轮罩98的链条出口并以螺钉100固定。As an example, the connection scheme of the chain tube and the flywheel cover shown in FIG. 20 and above shows another positioning connection solution: the upper chain pipe 99 is tightly connected to the chain outlet of the flywheel cover 98 and fixed with screws 100.
图21以下链管与管状拨腿的连接方案为例，示出了另一种定位连接方案：管状拨腿101下口的四角与下链管102管口的四角分别以短绳103连接。FIG. 21 is an example of a connection scheme between a chain pipe and a tubular shifting leg, which shows another positioning and connection scheme: the four corners of the lower mouth of the tubular shifting leg 101 and the four corners of the lower mouth of the chain pipe 102 are connected by short ropes 103, respectively.
实施例7Example 7
本例与实施例1的不同之处是，防尘套不同。This example is different from the first embodiment in that the dust cover is different.
如图22所示，防尘套106将拨腿107整个套住、且防尘套106的下部延伸至下链管105的后部。As shown in FIG. 22, the dust-proof cover 106 covers the entire leg 107, and the lower part of the dust-proof cover 106 extends to the rear of the lower chain pipe 105.
如图23所示，防尘套108的下部与下链管109的后部为一体构造。As shown in FIG. 23, the lower part of the dustproof cover 108 and the rear part of the lower chain pipe 109 are an integral structure.
如图24所示，防尘套110设有供后拨P轴118通过的P轴孔111，为便于防尘套110在不拆卸后拨的情况下由下至上插入就位，P轴孔111至防尘套110的上沿设有贯通缝112。为容纳花鼓通过，防尘套110的左侧设有缺口113。和例1所示防尘套将整个后拨内置于其中不同的是，本案防尘套110仅将后拨的拨腿部分内置于其中。As shown in FIG. 24, the dust cover 110 is provided with a P-axis hole 111 through which the rear dial P-axis 118 passes. In order to facilitate the dust cover 110 to be inserted into position from bottom to top without removing the rear dial, the P-axis hole 111 A through seam 112 is provided to the upper edge of the dust cover 110. To accommodate the passage of the hub, a gap 113 is provided on the left side of the dust cover 110. Unlike the dustproof case shown in Example 1, which includes the entire rear dial built therein, the dustproof case 110 in this case only includes the rear dial part.
注意：本发明的示意性实施例及其说明用于解释本发明，并不构成对本发明的不当限定。任何本领域的普通技术人员，依照本发明所做的同等改进，应为本发明的范围所涵盖。Note: The exemplary embodiments of the present invention and its description are used to explain the present invention, and do not constitute an improper limitation on the present invention. Any person of ordinary skill in the art and equivalent improvements made in accordance with the present invention should be covered by the scope of the present invention.

Claims (11)

  1. 一种链罩，包括：牙盘罩、飞轮罩、上链管；所述牙盘罩为盒状；所述牙盘罩设有牙盘罩链条入口；所述牙盘罩固定连接在车架的中部；所述飞轮罩为盒状；所述飞轮罩设有飞轮罩链条出口；所述飞轮罩一体制造或固定连接在所述车架的尾部；所述上链管为柔性的；所述上链管的前部定位连接在所述牙盘罩链条入口、所述上链管的后部定位连接在所述飞轮罩链条出口。A chain cover includes: a crank cover, a flywheel cover, and a winding tube; the crank cover is box-shaped; the crank cover is provided with a crank cover chain entrance; and the crank cover is fixedly connected to a frame The flywheel cover is box-shaped; the flywheel cover is provided with a flywheel cover chain outlet; the flywheel cover is integrally manufactured or fixedly connected to the tail of the frame; the winding pipe is flexible; the The front portion of the winding tube is positioned and connected to the chainring cover chain inlet, and the rear portion of the winding tube is positioned to be connected to the flywheel cover chain outlet.
  2. 如权利要求1所述的链罩，其特征是，本发明链罩还包括下链管；所述下链管由弹性材料制成；所述牙盘罩设有牙盘罩链条出口；所述下链管的前部定位连接在所述牙盘罩链条出口；所述下链管的后部定位连接在拨腿部。The chain cover according to claim 1, wherein the chain cover of the present invention further comprises a lower chain tube; the lower chain tube is made of an elastic material; the chain plate cover is provided with a chain plate cover chain outlet; The front part of the lower chain tube is positioned and connected to the chain mouth of the chainring cover; the rear part of the lower chain tube is positioned and connected to the dial leg.
  3. 如权利要求2所述的链罩，其特征是，所述拨腿部为管状，所述拨腿部的下口朝向链条移入方向；所述下链管的后部定位连接在所述拨腿部的下口。The chain cover according to claim 2, characterized in that, the leg part is tubular, and the lower mouth of the leg part faces the chain moving direction; the rear part of the lower chain tube is positioned and connected to the leg part The lower mouth of the department.
  4. 如权利要求2所述的链罩，其特征是，本发明链罩还包括套管；所述套管固定套在所述拨腿部，所述套管的下口朝向链条移入方向；所述下链管的后部定位连接在所述套管的下口。The chain cover according to claim 2, characterized in that the chain cover of the present invention further comprises a sleeve; the sleeve is fixed on the leg part, and the lower mouth of the sleeve is directed toward the chain moving direction; The rear part of the down pipe is positioned and connected to the lower mouth of the casing.
  5. 如权利要求2所述的链罩，其特征是，所述下链管的后部以张力轮轴为枢轴，枢接在所述拨腿部。The chain cover according to claim 2, characterized in that the rear part of the lower chain tube is pivoted on the tension wheel shaft and is pivotally connected to the leg shifter.
  6. 如权利要求3至5所述的链罩，其特征是，所述飞轮罩为半罩；本发明链罩还包括防尘套；所述防尘套为柔性的；所述防尘套与所述飞轮罩固定连接组成基本密闭的空间，以将所述拨腿部以及所述飞轮罩住。The chain cover according to claims 3 to 5, wherein the flywheel cover is a half cover; the chain cover of the present invention further comprises a dust cover; the dust cover is flexible; the dust cover and the The flywheel cover is fixedly connected to form a substantially closed space, so as to cover the dialing leg portion and the flywheel.
  7. 如权利要求2所述的链罩，其特征是，所述飞轮罩为全罩；所述飞轮罩设有飞轮罩链条入口；所述下链管的后部定位连接在所述飞轮罩链条入口。The chain cover according to claim 2, wherein the flywheel cover is a full cover; the flywheel cover is provided with a flywheel cover chain inlet; the rear part of the lower chain tube is positioned and connected to the flywheel cover chain inlet .
  8. 如权利要求1所述的链罩，其特征是，所述飞轮罩固定连接在后轮轴所连接的车架杆件。The chain cover according to claim 1, wherein the flywheel cover is fixedly connected to a frame rod member connected to a rear wheel axle.
  9. 如权利要求1所述的链罩，其特征是，所述飞轮罩的罩壁被夹紧在后叉端片和花鼓端部之间。The chain cover according to claim 1, wherein a cover wall of the flywheel cover is clamped between a fork end piece and a hub end.
  10. 如权利要求1所述的链罩，其特征是，所述上链管为弹性伸缩的。The chain cover according to claim 1, wherein the winding pipe is elastically retractable.
  11. 如权利要求1所述的链罩，其特征是，所述上链管具有纵向全通的，能打开和封闭的贯通缝。The chain cover according to claim 1, wherein the winding pipe has a through seam that is fully through in the longitudinal direction and can be opened and closed.
PCT/CN2019/079949 2018-06-03 2019-03-27 Chain cover WO2019233167A1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN201810560180 2018-06-03
CN201810560180.7 2018-06-03
CNPCT/CN2018/101963 2018-08-23
PCT/CN2018/101963 WO2019232935A1 (en) 2018-06-03 2018-08-23 Protection device

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WO2019233167A1 true WO2019233167A1 (en) 2019-12-12

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PCT/CN2018/101963 WO2019232935A1 (en) 2018-06-03 2018-08-23 Protection device
PCT/CN2019/079949 WO2019233167A1 (en) 2018-06-03 2019-03-27 Chain cover

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US2909937A (en) * 1957-09-03 1959-10-27 William A Williams Chain lubricator and dust guard
US4632416A (en) * 1985-07-24 1986-12-30 Zelenetz Scott H Flexible protective cover for the drive train elements of a bicycle
US4854924A (en) * 1986-08-21 1989-08-08 Shimano Industrial Company Limited Cover device for a driving chain for a bicycle
CN2216027Y (en) * 1995-03-10 1995-12-27 刘少枚 Float supported chain cover
CN1164492A (en) * 1996-03-29 1997-11-12 本田技研工业株式会社 Chain box for motor bicycle
DE29911319U1 (en) * 1999-06-29 1999-09-02 Hemmelskamp Fa H Chain protector made of plastic
CN1289697A (en) * 1999-09-29 2001-04-04 邓子来 Chain cover of bicycle or tricycle
JP2001191972A (en) * 2000-01-11 2001-07-17 Ogk Co Ltd Coverall chain case for bicycle
GB2351056A (en) * 2000-03-15 2000-12-20 Mark Blanchard Chain guard for motorcycles
TW564845U (en) * 2003-01-21 2003-12-01 Yung Fang Plastic Co Ltd Improvement on retractable structure for chain guard
DE20313080U1 (en) * 2003-08-23 2004-12-23 Hebie Gmbh & Co. Kg Retaining device for sleeve-like chain guard of two-wheeler has support fixable on rear wheel fork strut and extending perpendicularly upwards and downwards over strut, and two bolt-like retaining components fixed on support at ends
DE202006019222U1 (en) * 2006-12-19 2007-04-12 Horn Gmbh Fabrik Fuer Metall Safety device for drive chain of two wheeled-vehicle has bent front-protective section and rear elongated protective section whereby attachment part is guided longitudinally on protective section
CN201033606Y (en) * 2007-06-09 2008-03-12 谢贤林 Full-enclosed motor-cycle of motorcycle
US20090325751A1 (en) * 2008-06-27 2009-12-31 Uwe Carstensen Drive Chain Cover
CN104627284A (en) * 2015-01-23 2015-05-20 天津市禧福珑电动自行车有限公司 Bicycle chain guard assembly
CN204548315U (en) * 2015-02-28 2015-08-12 天津友鹏永悦工贸有限公司 A kind of bicycle chain wheel cover of light structure
US20170043836A1 (en) * 2015-08-13 2017-02-16 Hebie Gmbh & Co. Kg Protective cover for a drive chain

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